Well, apparently Sketch Nation Studio can help!
Sketch Nation Studio is a free app that promises to let you make games on your iPhone or iPad without any programming knowledge or experience. Obviously there are certain limits, but it's encouraging to see that there is a free app that allows you to have a go at game design with only your creativity as a limit.
I haven't tried it out yet, but it's certainly something I'll be giving a try over the next few weeks.
I found this over at IndieGames.com if you want to keep a look out for other awesome games, apps and pretty much all things indie...